<form>
  <div class="form-group">
    <label>Challenge Window Size</label>
    <select class="form-control custom-select" name="challenge_window_size">
        <option value="sm">Small</option>
        <option value="norm">Normal</option>
        <option value="lg">Large</option>
        <option value="xl">Extra Large</option>
    </select>
  </div>

  <div class="form-group">
    <label>
      Challenge Category Order Custom Function<br>
      <small class="form-text text-muted">
        Define a <a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/sort#description" target="_blank">custom compareFn function for Array.sort()</a> 
        used to sort the challenge categories
      </small>
    </label>
    <textarea class="form-control text-monospace" name="challenge_category_order" rows="5"></textarea>
  </div>

  <div class="form-group">
    <label>
      Challenge Order Custom Function<br>
      <small class="form-text text-muted">
        Define a <a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/sort#description" target="_blank">custom compareFn function for Array.sort()</a> 
        used to sort the challenges within categories
      </small>
    </label>
    <textarea class="form-control text-monospace" name="challenge_order" rows="5"></textarea>
  </div>

  <div>
    <div class="form-check">
      <input type="checkbox" class="form-check-input" id="use_builtin_code_highlighter" name="use_builtin_code_highlighter" checked>
      <label class="form-check-label" for="use_builtin_code_highlighter">
        Use Built-In Syntax Highlighter
      </label>
    </div>
    <small class="form-text text-muted">
      The built-in syntax highlighter is lightweight and fast but may not always correctly highlight all languages. You can disable the built-in highlighter in order to use your own.
    </small>
  </div>

  <button type="submit" class="btn btn-primary float-right mt-4">Update</button>
</form>